Imperial
War Cabinet Body created by the British prime minister David
Lloyd George in the spring of 1917 to bring into the Allied policy-making
process his counterparts in Australia, Canada, New Zealand and South
Africa, as well as the secretary of state for India.

Imperial
War Graves Commission Created by Royal Charter on 21 May
1917. Charged with marking and maintaining the graves of all the
fallen members of the British empire's armed forces and creating
cemeteries and memorials in their honour. Known today as the Commonwealth
War Graves Commission.

IndefatigableOne of three British battle cruisers sunk by the German naval
fleet at the Battle of Jutland (31 May-1 June 1916).

Independent
Labour Party (ILP) Founded in Bradford in 1893, the ILP was
the largest political party in Britain to oppose the First World
War. Many of its activists were prominent in the anti-conscription
campaign that began in 1915.

Indian Army
From a pre-war strength of 155,000, the Indian Army rose
in size to 573,000 men by November 1918. Most of the 1.3 million
men who served in it during the First World War were Indians, though
the officer corps was largely British. They saw action in particularly
large numbers on the Western Front and in Mesopotamia.

Influenza
pandemic Worldwide epidemic of the disease also known as
'Spanish flu'. Killed as many as 30 million people between 1918
and 1920.

Information,
Ministry of Created in February 1918 under Lord Beaverbrook,
the last new ministry to be created during the First World War.
Discontinued in November 1918.

InvincibleOne of three British battle cruisers sunk by the German
naval fleet at the Battle of Jutland (31 May-1 June 1916).

Ironside, General
William Edmund (1880-1959) Served on the Western Front throughout
the First World War and as commander-in-chief of the British forces
sent to support the counter-revolutionary 'Whites' in Russia, 1918-19.
During the Second World War, he was commander-in-chief of the British
home forces.

Isonzo River
in SE Europe, rising in NW Slovenia and flowing into NE Italy. During
the First World War, the Isonzo valley was the scene of no fewer
than 12 battles between Italian and Austro-Hungarian forces. The
final one in October 1917, better known as the Battle of Caporetto,
resulted in a humiliating defeat for Italy that nearly drove it
out of the war.